Power Management
Subcategories
Products (2,800+)
MCP1825S-3302E/AB - 500mA 3.3V LDO Regulator TO-220-3 | Microchip
The Microchip Technology MCP1825S-3302E/AB is a 500 mA, ceramic-output-cap-stable, fixed 3.3 V output, low-dropout (LDO) linear regulator in a TO-220-3 (3-pin + tab) through-hole package. It accepts a wide 2.1 V to 6.0 V input voltage range, delivers a 3.3 V fixed output with 2.0% accuracy, and features an ultra-low 210 mV dropout at full 500 mA load. The ceramic-cap stability eliminates the bulky tantalum capacitors required by older LDOs, enabling smaller and lower-cost solution sizes while inherently providing lower output noise. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage - typically within a few hundred millivolts. LDOs are a subset of linear regulators, which in turn belong to the broader category of voltage regulators within power management ICs. Unlike switching regulators, an LDO dissipates the difference between input and output as heat, but in exchange it produces a clean, low-noise output with no switching ripple, making it ideal for noise-sensitive analog and digital loads. Key specifications include 500 mA continuous output current, 210 mV typical dropout, only 1 microfarad (1 uF) ceramic output capacitance required for stability, low quiescent current, thermal-shutdown and current-limit protection, and an extended -40C to +125C junction operating temperature range. The TO-220-3 package with metal tab provides a very low thermal resistance (theta_JA around 35-40 C/W with proper PCB copper/heatsink), allowing sustained 500 mA output across the full input voltage range without additional thermal mitigation in typical through-hole designs. Architecturally the MCP1825S uses a P-channel MOSFET pass element, which is the source of its low-dropout capability (P-channel FETs do not require a gate drive above VIN). The control loop combines a precision bandgap reference with a high-gain error amplifier and integrated soft-start, which controls inrush current at power-up. A separate SHDN input (if present on the variant) and internal protection features - current limit, thermal shutdown, and reverse-current blocking - protect both the regulator and downstream circuitry during fault conditions. Typical applications include 3.3 V power rails for microcontrollers, ASICs, and FPGAs; USB peripheral and hub power; battery-powered portable devices; industrial sensor conditioning; and as post-regulation after switching converters to clean switching ripple from noise-sensitive analog blocks such as ADCs, DACs, and RF transceivers. A key design consideration is the absolute maximum input voltage of 6.0 V - operation above this rating will damage the device. Although the device works without input capacitance, a 1 uF ceramic input cap placed close to VIN is strongly recommended to improve transient response to input steps. The TO-220 tab is electrically tied to the die substrate and normally connects to GND; depending on layout it can be left floating or connected to the ground plane to spread heat. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving the engineer an at-a-glance design reference for the MCP1825S-3302E/AB.
MCP73833T-FCI/MF - 1A Li-Ion/Li-Polymer Charge Controller | Microchip
The Microchip Technology MCP73833T-FCI/MF is a stand-alone linear charge management controller for single-cell Lithium-Ion and Lithium-Polymer batteries, delivering up to 1 A of charge current from an integrated pass transistor. Housed in a 10-pin 3x3 mm DFN exposed-pad package, it integrates current sensing, reverse-discharge protection, on-chip thermal regulation, cell temperature monitoring, and safety timers, eliminating the need for an external microcontroller or sense resistor. A linear Li-Ion/Li-Polymer charge management controller is a type of battery management IC that regulates current and voltage applied to a rechargeable cell using a series pass element and a precision control loop. Within the broader power management hierarchy, this controller sits between the system supply and the battery pack and belongs to the family of charge management ICs, power management ICs, and finally analog semiconductors. The MCP73833 is optimized for single-cell (4.2 V) charging and implements the constant-current / constant-voltage (CC/CV) profile required by Li-Ion/Li-Polymer chemistry. Key features include programmable charge current up to 1 A, factory-set regulation voltage of 4.2 V (4.2 V option per the FCI variant ordering code), low input supply current, an open-drain STAT output for charge-status indication, and a thermal-regulation loop that automatically reduces charge current when the die temperature rises. The exposed-pad DFN package provides a low thermal resistance path to the PCB, supporting sustained 1 A operation with proper copper layout. The internal architecture uses a precision bandgap reference, current-sense amplifier, comparator-based charge-state machine, and an integrated MOSFET pass transistor. Reverse-discharge blocking prevents the battery from back-feeding the system load when input is removed, simplifying power-path design compared with discrete solutions. Typical applications include USB-powered single-cell Li-Ion chargers, wearable and IoT device charging bays, portable medical device cradles, Bluetooth headphone charging cases, and backup-battery maintainers. The wide input tolerance and integrated protections make it well suited to consumer electronics and low-power industrial sensor nodes. When designing with this device, place the input capacitor, battery capacitor, and the thermal pad with sufficient copper area to support 1 A continuous charge. The PROG pin resistor sets charge current and must be selected according to the desired ICHG; a thermal pad copper pour of at least 1 square inch is recommended for sustained high-current operation.
MCP73871-2AAI/ML - 1A Li-Ion/Li-Poly Load-Sharing Charger IC | Microchip
The Microchip Technology MCP73871-2AAI/ML is a fully integrated linear charge management controller for single-cell Li-Ion and Li-Polymer batteries, housed in a 20-pin QFN (4x4 mm) package with exposed thermal pad. It delivers up to 1 A of programmable charge current, supports input voltages up to 6 V, and features autonomous power-source selection between an AC-DC wall adapter and a USB port while implementing system load sharing so the battery and input jointly power the system load. A battery charger IC is an integrated circuit that manages the safe charging of a rechargeable cell by enforcing the constant-current / constant-voltage (CC/CV) profile, monitoring cell temperature, and terminating charge when full. Load-sharing battery chargers add input-current limiting and a power-path control loop so the system load is preferentially served by the input source, with the battery providing only the deficit. The MCP73871 family sits in the broader hierarchy: charger IC -> battery management -> power management IC -> semiconductor, and is commonly deployed where USB or a wall adapter powers a portable product backed by a single Li-Ion/Li-Polymer cell. Key specifications include programmable charge current up to 1 A set by an external resistor, input over-voltage protection up to 6 V, low input quiescent current of approximately 28 uA, automatic USB 100 mA / 500 mA / 1 A current-limit selection via the SEL pin, integrated 4.2 V (AAI suffix) charge voltage regulation with 0.5% accuracy, and built-in thermal regulation that reduces charge current as junction temperature rises. The device also provides an open-drain STAT output, an active-low PG power-good indicator, and a TIMER pin for programmable charge-time safety termination. Technically, the MCP73871 combines a precision bandgap reference, a current-sense amplifier, and a pass element with a charge-control state machine that follows the CC/CV profile with trickle preconditioning for deeply discharged cells. The SEL pin toggles between USB-host (100 mA), USB-client (500 mA), and AC-wall-adapter (1 A) current-limit modes, ensuring USB-spec compliance. Internal thermal regulation folds back charge current when die temperature exceeds approximately 115 C, eliminating the need for external thermal management in typical handheld designs. Typical applications include single-cell Li-Ion/Li-Polymer charging in portable media players, Bluetooth headsets, wearable fitness devices, handheld data terminals, USB-powered medical accessories, and any battery-backed system where the load must continue to operate during charge cycles. When designing with this part, place input and output capacitors close to the IC, choose the charge-current sense resistor so the desired IREG (typically 1 A) is set by VPROG, and verify thermal dissipation with a continuous VIN-VBAT drop, because linear regulation dissipates (VIN-VBAT) x IBAT as heat. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the information in the manufacturer datasheet.
MCT8316A - 40V, 8A Sensorless BLDC Motor Driver | Texas Instruments
The Texas Instruments MCT8316A is a 40-V max, 8-A peak, sensorless trapezoidal control integrated FET 3-phase BLDC motor driver supplied in a 40-pin VQFN (7x5 mm) package with exposed thermal pad. It delivers a single-chip, code-free solution for 12- to 24-V brushless-DC motors requiring high-speed operation up to 3 kHz electrical frequency or very fast startup times below 50 ms. A sensorless trapezoidal control BLDC driver is a motor driver that uses back-EMF sensing to determine rotor position, eliminating Hall-effect sensors and reducing system cost, wiring complexity, and failure points in harsh environments. The MCT8316A belongs to the integrated FET motor driver family within the broader power management and motor control IC hierarchy, combining gate drivers, power FETs, and control logic in one package. Key features include three integrated NMOS half-bridges with very low on-resistance (95 mOhm high-side + low-side per the MCT8316A-Q1 product data), support for both I2C (MCT8316AV) and hardware-interface (MCT8316AT) versions, configurable startup and stop options, active demagnetization, and optional closed-loop speed control. An integrated adjustable buck regulator and LDO generate 3.3-V or 5.0-V rails that can also power external circuitry. The architecture implements code-free trapezoidal commutation with internal back-EMF sensing, so no firmware development is required for basic operation. Two 12-bit DACs output analog voltages proportional to internal digital variables on DACOUT1 and DACOUT2 pins, enabling real-time tuning and diagnostics. Protection features include undervoltage lockout (UVLO), overcurrent protection (OCP), overtemperature warning and shutdown (OTW/OTSD), and abnormal voltage suppression (AVS). Typical applications include power tools, vacuum robots, drones, fans, and pumps, where the <50 ms startup and 3 kHz electrical capability support rapid acceleration and high rotational speed. The I2C variant adds advanced configuration and monitoring for smart appliances and industrial equipment. Design consideration: provide adequate bulk capacitance on the motor supply to absorb 8-A peak transients, and use short, low-inductance traces to the motor terminals to limit EMI; the exposed thermal pad needs a solid copper pour for heat dissipation at high continuous loads. This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet.
MCZ33689DEW - System Basis Chip with LIN Transceiver | NXP
The NXP MCZ33689DEW is a SPI-controlled System Basis Chip (SBC) that integrates multiple frequently used functions for MCU-based systems plus a Local Interconnect Network (LIN) transceiver, all in a 32-pin SOIC package. It combines a 5V/3.3V linear regulator, multiple watchdog topologies, a LIN 2.1/2.0/1.3 physical layer transceiver, and SPI-configurable housekeeping functions into a single IC, reducing discrete BOM count in automotive body electronics modules. A System Basis Chip (SBC) is a power-management + communication hybrid IC designed for automotive body and convenience domains. It sits between the battery (typically 6V-18V in 12V systems, with load-dump transients up to 40V) and a host MCU, providing a regulated logic rail, robust in-vehicle network connectivity, and supervisory functions such as watchdog, reset generation, and fault detection. MCZ33689DEW belongs to the SBC family hierarchy: SBC > power-management IC > PMIC > automotive IC > semiconductor. Key features include a 5V/3.3V selectable LDO regulator delivering up to 200 mA for MCU and sensor supply, an integrated LIN 2.1-compliant transceiver with up to 20 kbit/s data rate, configurable window or timeout watchdog, low quiescent current in standby mode, and protection against load-dump, reverse battery, and overtemperature. The SPI interface allows the host MCU to adjust regulator voltage, watchdog timing, and LIN mode at runtime. The 32-pin SOIC package supports gull-wing mounting for robust automotive manufacturing. The device uses a mixed-signal BiCMOS process with onboard charge pump to drive the LIN bus dominant state, eliminating external pull-up components. Its internal voltage reference and low-drop architecture deliver stable MCU rail even during cranking pulses (as low as 5V on a 12V battery). An integrated LIN slope control reduces EMI emissions to meet automotive EMC standards. Typical applications include body control modules, door/window/seat control units, HVAC climate nodes, steering wheel switch interfaces, and lighting controllers. Any 12V automotive node with LIN-commissioned sensors and a host MCU benefits from this SBC integration. When designing with MCZ33689DEW, follow NXP application notes on LIN bus termination and load-dump protection. Add a reverse-battery protection diode or P-MOSFET at VBAT, decouple the LIN pin per SAE J2602, and verify thermal performance under sustained fault conditions. Watchdog topology selection (window vs timeout) must match the host MCU's response timing. This page synthesizes distributor pricing, drop-in-compatible alternatives, and application guidance not aggregated in a single manufacturer document, helping hardware engineers shorten the design-in cycle for 12V LIN body-electronics modules.
MCZ33742EGR2 - System Basis Chip w/ HS-CAN Transceiver | NXP
The NXP (formerly Freescale) MCZ33742EGR2 is a System Basis Chip (SBC) integrating an enhanced high-speed CAN transceiver, an SPI-controlled power management block, and watchdog/voltage-monitoring functions in a 28-pin SOIC wide-body package. The device operates from a 5.5 V to 18 V supply (with transient tolerance higher), delivers 1 Mbps CAN 2.0-compatible bus communications, and supports Sleep, Standby, and Stop low-power modes for energy-efficient automotive ECU design. A System Basis Chip is a class of automotive power-management IC that consolidates a 5V regulator, CAN/LIN physical layer, watchdog timer, and reset generation onto a single die. The MCZ33742EGR2 sits in the NXP SBC product family between simple transceivers and full microcontroller companion chips, reducing ECU bill-of-materials, PCB area, and quiescent current in body and chassis control modules. Key features include a 5 V/9 V/12 V/15 V/18 V/24 V-tolerant CAN bus interface, 1 Mbps high-speed CAN 2.0b passive/active error framing, hardware SPI control of all functions, programmable watchdog with window mode, low quiescent current in Sleep mode for battery-direct ECUs, and integrated thermal shutdown plus load-dump protection up to 40 V. The chip targets 12 V automotive battery rails where cold-crank and load-dump transients stress conventional transceivers. The 33742 architecture combines a CAN physical layer compliant with ISO 11898-2/5, an internal 5 V LDO/switch-mode preregulator front end selectable by variant, and an SPI register set mapped for diagnostics such as TX/RX error counters, thermal flags, and bus failure modes. The companion variant 33742S adds enhanced ESD on the bus pins, useful for off-board harness connections. Typical automotive applications include body control modules (BCM), HVAC controllers, instrument clusters, seat and mirror modules, lighting ECUs, and gateway nodes that bridge CAN networks. The integrated SBC form factor replaces discrete 5 V regulators plus standalone CAN transceivers, freeing board space for wireless or sensor interfaces. When designing with the MCZ33742EGR2, place a 100 nF decoupling capacitor within 5 mm of VBAT and a bulk capacitor (>=10 uF) on the regulated 5 V rail to handle CAN bus load transients. Configure the watchdog window via SPI before enabling CAN transmit to satisfy fail-safe startup timing. This page consolidates distributor pricing, drop-in alternatives, and design notes not found in the Freescale/NXP datasheet, along with provenance-traced comparison parameters and AI-search-optimized FAQ answers for engineers evaluating SBC upgrades.
MCZ33742SEG - SBC with HS-CAN & 5V LDO | NXP Semiconductors
The NXP Semiconductors MCZ33742SEG is a System Basis Chip (SBC) with Enhanced High-Speed CAN Transceiver (SBC-E-HS-CAN) that integrates a 1.0 Mbps CAN 2.0 compliant transceiver, a SPI control interface (up to 4.0 MHz), and a fully protected 5.0 V low-dropout regulator with current limiting, overtemperature prewarning, and reset output. The device is supplied from a 5.5 V to 18 V (5.5 V–27 V tolerant) automotive bus rail and packages into a 28-pin wide-body SOIC with 42 mA typical quiescent supply. A System Basis Chip (SBC) is a power-management-plus-communication IC that consolidates the functions commonly surrounding a microcontroller in an automotive ECU: a voltage regulator, a CAN (Controller Area Network) or LIN physical transceiver, watchdog logic, and protective features. The SBC sits between the vehicle's 12 V battery bus and the MCU, providing a regulated logic rail and the physical layer for in-vehicle networking. As an automotive-grade mixed-signal IC, the MCZ33742SEG belongs to the power management IC (PMIC) and transceiver hybrid category used inside body, chassis, and powertrain ECUs. Key features include 1.0 Mbps CAN transceiver with bus diagnostic capability (TXD-dominant-timeout, bus-fault detection), SPI control at frequencies up to 4.0 MHz for configuration and diagnostics, and a fixed 5.0 V LDO with current limit, overtemperature prewarning, output voltage monitoring, and reset generation. The output drive stage includes a sense input for closed-loop regulation across a remote load. The device operates over -40 °C to +125 °C, qualifying it for under-the-hood ECU environments. Architecturally, the MCZ33742SEG combines a high-speed CAN physical layer (ISO 11898-5 compliant) with an LDO regulator, SPI-mapped control/status registers, and several fault-protection blocks (overtemperature, undervoltage, overcurrent, TXD dominant timeout). The high-side driver with sense feedback enables load-dump-tolerant supply of downstream 5 V microcontrollers and sensors while the CAN transceiver supports standard CAN 2.0A/B frames up to 1 Mbps on a bus-protected physical interface. Typical applications include automotive HVAC control units, body controllers, instrument cluster power and communication, ECU power and CAN interfacing, and industrial CAN-enabled sensor hubs. The integrated LDO plus CAN transceiver reduces external component count on space-limited modules. The diagnostic features (TXD dominant timeout, bus fault, overtemperature prewarning) simplify ASIL-ready firmware development under ISO 26262 processes. When designing with this device, decouple VCC and VDD pins with 100 nF ceramic capacitors placed within 2 mm of the IC pins and follow NXP application note SAB089 for high-speed CAN bus termination (120 Ω at each end, split termination recommended). Always respect the absolute maximum load-dump rating of 40 V on VBAT to avoid catastrophic regen silicon die failure.
MCZ33797EK - 4-Channel Squib Driver IC for Airbag | NXP
The NXP MCZ33797EK is a four-channel squib deployment and diagnostic interface IC designed for automotive airbag modules, housed in a 32-pin SOIC wide-body package. The device integrates four independent high-side/low-side deploy drivers, comprehensive deployment diagnostics, and SPI communications for ECU-side control. It operates across an automotive battery range and provides per-channel current monitoring, safing logic, and deployment enable logic. A squib driver IC is a specialized gate-driver / power-interface category that sits between an airbag ECU microcontroller and the initiator (squib) of an airbag inflator. The category hierarchy is squib driver -> airbag deployment IC -> automotive safety IC -> automotive power management. Squib drivers must satisfy AEC-Q100 and ISO 26262 functional-safety requirements because they directly control irreversible deployment events, so they are far more than simple FET drivers. Key features of the MCZ33797EK include four deploy channels with independent high-side and low-side FET drivers, integrated safing switch logic that requires two independent arming signals before deployment, per-channel diagnostics (short-to-battery, short-to-ground, open-load, and deployment current monitoring), a 16-bit SPI interface with daisy-chain capability for multi-ECU synchronization, and integrated energy-storage capacitor management to guarantee deployment even during brown-out events. Each channel can source and sink deployment currents with diagnostics reported back through the SPI status registers. The device architecture uses an SPI-controlled state machine, four independent H-bridge deploy drivers, dual safing logic inputs that require simultaneous assertion, and continuous diagnostic loops that compare measured deployment current against expected profiles. The dual-safing requirement (two independent signals) is a deliberate functional-safety redundancy that prevents accidental deployment from a single-point MCU failure. Typical applications include driver airbag, passenger airbag, side airbag, knee airbag, and seatbelt pretensioner deployment drivers in automotive restraint systems. The device is also used as a generic four-channel IC for deployment loops in two-wheeler airbag systems and in industrial pyrotechnic actuator systems where automotive-grade reliability is required. When designing with this device, the deploy energy-storage capacitor must be sized per the NXP application note; an undersized capacitor will cause brown-out reset and brown-out. Rotation of the deploy loops and continuous diagnostic monitoring are mandatory safety practices for compliance with FMVSS 208 and ECE R94. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the squib driver category not found in the manufacturer datasheet summary alone.
MCZ33797EKR2 - 4-Channel Squib Driver IC | NXP Semiconductors
The NXP MCZ33797EKR2 is a four-channel squib driver IC engineered as a complete squib diagnostic and deployment interface for automotive air bag modules, housed in a 32-pin SOIC (0.295", 7.50 mm width) package and shipped on tape-and-reel. The device integrates high-side and low-side drivers per channel, deploy loops with dual high-side and dual low-side FETs, and a dedicated diagnostic interface for monitoring squib resistance, short-circuit, open-circuit, and battery-voltage conditions during assembly and in-vehicle service. A squib driver is a specialized interface IC within the automotive safety and power management hierarchy (squib driver -> airbag deployment IC -> automotive safety IC -> integrated circuit) that sits between the airbag electronic control unit (ECU) and the pyrotechnic initiator in the inflator. Its primary role is to deliver a controlled, high-current deployment pulse on command from the ECU, while continuously monitoring squib health so the system can detect a missing, shorted, or aged initiator before it becomes a safety liability. Key features include four independent deployment channels, programmable deployment current and timer profiles, integrated diagnostic functions (squib resistance measurement, short-to-ground, short-to-battery, and open-load detection), an SPI-compatible serial communications interface for ECU command/status exchange, and built-in fault counters. The device operates over the automotive battery range and is qualified to operate from -40 C to +85 C ambient. It includes watchdog and fault-output pins and supports both single-point and dual-point deployment configurations. Technically, each channel combines a deploy high-side FET, deploy low-side FET, and a diagnostic analog front end. The diagnostic engine performs ratiometric resistance measurements against internal references, enabling detection of squib values outside the safe envelope. Deployment is initiated via SPI commands and executed with hardware handshaking to ensure deterministic timing. Typical applications include driver-side airbag modules, passenger-side airbag modules, side-curtain airbag modules, knee airbag modules, and seat-belt pretensioner modules. Most commonly used by Tier-1 airbag ECU suppliers building dual-stage inflator systems where each squib is independently controllable and diagnosable. Design consideration: the deployment energy is delivered by energy stored on bulk capacitors, so the board must include low-ESR bulk capacitance sized for the worst-case deployment profile. Pin 1 orientation and SOIC-32 pinout should be cross-checked against the manufacturer datasheet before PCB layout. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer product page.
MCZ33811EGR2 - 5-Ch Solenoid Monitor IC, SPI, 16-SOIC | NXP
The NXP MCZ33811EGR2 is a 5-channel solenoid monitor integrated circuit that verifies proper electrical and mechanical solenoid operation in automotive electronic control units. Housed in a 16-pin SOIC wide-body (0.295 inch / 7.50 mm) package supplied on tape and reel, the device operates from a 7 V to 17 V supply rail with a typical quiescent supply current of 1 mA across the automotive -40 °C to +125 °C temperature range. Each of the five channels integrates a solenoid driver voltage monitoring stage that compares the switched battery rail against an internal reference and reports the result back to the host microcontroller over an SPI-compatible serial peripheral interface used for fault communication and threshold setup. A solenoid monitor IC is a specialized power-management and supervisory block that sits alongside the low-side solenoid drivers in a transmission, engine, or body controller and continuously checks that each inductive load is being driven correctly. It belongs to the broader hierarchy of supervisory / monitoring ICs -> power-management ICs -> mixed-signal automotive semiconductors. The MCZ33811EGR2's job is to detect open-load, short-to-battery, short-to-ground and over-current conditions on five independent solenoid outputs without disturbing the actuation path itself, which is why its supply current is held to roughly 1 mA even with all five channels active. Key features include five independent solenoid monitoring channels, an SPI interface for diagnostics and programmable thresholds, integrated fault latching and reporting, an automotive temperature grade rated for under-hood environments, and the wide-body 16-SOIC footprint that is shared across NXP's 33xxx analog companion family. The architecture uses five analog comparators with a precision bandgap-derived threshold, a digital SPI slave, and on-chip fault registers that flag each channel independently so the host MCU only needs to poll one register per channel rather than five separate status lines. Typical applications include automatic transmission solenoid monitoring, engine management solenoid banks, electronic stability control hydraulic valves, body controller load monitoring, and any 12 V automotive subsystem where a microcontroller must verify that five solenoids are being actuated reliably and detect wiring faults before they propagate into drivability or emissions problems. When designing with the MCZ33811EGR2, place 100 nF bypass capacitors on the VBAT supply pin as close to the package as possible and keep the SPI traces short and ground-referenced to preserve noise margin in the harsh automotive environment. The SPI MOSI, MISO, SCLK and CS pins require 4.7 kΩ pull-ups on the open-drain MISO line per the NXP application circuit. This page synthesizes distributor pricing, drop-in alternatives and practical design notes that are not found in the manufacturer datasheet alone, including a comparison of the MCZ33811EGR2 against the MCZ33996EK, MCZ33903DS3EK and other members of NXP's analog companion family.
MCZ33812AEK - Multifunctional Ignition/Injector Driver | NXP
The NXP MCZ33812AEK is an engine control analog power IC designed as a multifunctional ignition and injector driver for motorcycle and other single/dual cylinder small engine electronic fuel injection (EFI) systems. The device integrates three low-side drivers, one pre-driver, a +5.0 V pre-regulator, an MCU watchdog circuit, an SPI-controlled interface, and an ISO 9141 / K-Line-compatible diagnostic interface, all packaged in a 32-pin SOIC with exposed pad for enhanced thermal dissipation in under-bonnet environments. An ignition/injector driver IC is a specialized power-management semiconductor that sits between an ECU microcontroller and the high-current electromechanical actuators of an internal combustion engine. By integrating the low-side switches, pre-regulator, and watchdog into one die, it replaces several discrete MOSFETs, regulators, and reset supervisors, reducing PCB footprint, improving reliability under thermal cycling, and providing a single SPI-mapped control surface for the MCU. Key features include a 5.0 V ±2% internal pre-regulator capable of supplying the MCU core, three low-side FET drivers rated at typical 1.0 A continuous with fly-back-current handling, a pre-driver capable of driving an external IGBT for the ignition coil, an adjustable watchdog timer for MCU supervision, and a K-Line transceiver for OBD-II diagnostic communication. The device operates across the full automotive battery range, supports crank-down and load-dump transients, and is qualified to AEC-Q100 Grade 1 for under-hood deployment. Typical applications show step-change deployment in small-displacement motorcycle EFI systems, single-cylinder scooter ECUs, ATV and powersports engine controllers, small stationary engine controllers for generators or lawn equipment, and auxiliary two-wheeler body controllers where K-Line diagnostics and ignition drive are combined. The exposed pad (EP) package allows direct soldering to a copper ground pour for heatsinking of the internal low-side drivers. When designing with this device, follow the manufacturer reference layout for the exposed pad thermal land pattern, keep the K-Line trace away from the injector PWM edges, and provide adequate copper area on GND for the high di/dt low-side return currents. Decouple VCC close to the IC with at least 100 nF plus 10 uF of low-ESR ceramic capacitance.
MCZ33812EK - Multifunction Ignition & Injector Driver SOIC-32 | NXP
The NXP MCZ33812EK is a multifunctional ignition and injector driver IC designed for motorcycle and small single/dual-cylinder engine EFI (electronic fuel injection) control systems, packaged in a 32-pin SOIC-EP (exposed pad). It integrates three low-side drivers rated at 1 A each, a pre-driver section, a +5.0 V pre-regulator for MCU supply, a watchdog timer, an ISO 9141 K-Line interface for diagnostics, and a parallel MCU interface, operating across a 4.7 V to 36 V supply range with a -40 °C to +125 °C automotive temperature grade. Key features include three independent 1 A low-side outputs capable of driving injector solenoids or relays, an integrated 5 V linear pre-regulator (VCC) for an external MCU, an ISO 9141 K-Line bus transceiver compliant with OBD-II diagnostic requirements, and a watchdog timer with windowed refresh for MCU supervision. The device reduces external BOM by combining injector drivers, ignition pre-driver, regulator, watchdog, and K-Line transceiver in a single 32-pin thermally-enhanced SOIC package. Per the NXP/Freescale MC33812 datasheet, the IC is targeted at one- and two-cylinder motorcycle EFI platforms where PCB area, BOM count, and reliability are at a premium. The MCZ33812EK uses a mixed-signal bipolar/CMOS architecture combining power drivers with analog housekeeping blocks. The exposed pad on the SOIC-32-EP package provides a low thermal resistance path (essential when driving three injectors continuously), while internal charge pumps and gate drivers permit the low-side switches to fully enhance standard N-channel logic-level MOSFETs or operate as saturated Darlington outputs. The K-Line transceiver incorporates current limiting and slope control for robust OBD communication in noisy 12 V motorcycle electrical environments, and the watchdog supports both windowed and basic timeout modes. Typical applications include 1-cylinder and 2-cylinder motorcycle electronic fuel injection ECUs, small-engine EFI modules for scooters, generators, and marine outboards, K-Line diagnostic interfaces for OBD-II compliance, and small-displacement vehicle body controllers. The wide supply range permits direct connection to 12 V battery rails with full load-dump margin. When designing with the MCZ33812EK, the exposed pad must be soldered to a sufficient copper pour (recommended minimum ~1 sq in on top layer) to keep junction temperature within rating when all three injectors fire continuously. Decoupling of VCC and VSUP should use low-ESR ceramics placed close to the IC pins to suppress ECU supply transients. This page synthesizes datasheet specifications, distributor pricing, and design notes that complement the manufacturer datasheet for engineers selecting or replacing this analog power IC.
MCZ33812EKR2 - Engine Control Analog Power IC, SOIC-32 EP | NXP
The NXP MCZ33812EKR2 is an engine control analog power IC designed for single/dual cylinder small engine control applications, packaged in a 32-pin SOIC-EP (exposed pad) thermal-enhanced outline. The device integrates multiple functions required for electronic fuel injection (EFI) and ignition control, including a VCC regulator, an ignition pre-driver, an injector driver, and protective features. Operating from a supply voltage of up to 36 V, the IC serves as the central analog power management and switching element on the engine control module (ECM). An engine control analog power IC is a highly integrated mixed-signal component that conditions battery voltage, drives actuators, and provides protection for the analog and digital engine control circuitry. Within the broader NXP automotive portfolio, the MCZ33812 family sits under the powertrain IC category, which itself derives from power management ICs. The integration reduces the BOM of a complete EFI ECU by replacing dozens of discrete transistors, gate drivers and protection diodes, while providing automotive-grade reliability for harsh under-hood environments. Key features of the MCZ33812EKR2 include an internal 5 V VCC regulator capable of supplying the microcontroller, a high-current injector driver for solenoid actuation, a dedicated ignition pre-driver that interfaces with an external IGBT, an over-temperature shutdown circuit, and load-dump transient protection rated to 14 V supply compatibility. The SOIC-32 EP package exposes the die backside for direct PCB solder attachment, lowering thermal resistance and supporting continuous high-current operation of the injector driver stage. Architecturally, the IC combines a charge pump for the high-side driver rail, separate analog and digital grounds, and CMOS logic inputs that interface directly with a 3.3 V or 5 V MCU. The combination of monolithic integration and ruggedized outputs simplifies PCB layout of motorcycle ECUs and similar small-engine controllers, particularly where board area and component count are constrained. Typical applications for the MCZ33812EKR2 include small motorcycle EFI engine control units, single-cylinder scooter fuel injection modules, dual-cylinder ATV engine controllers, and generic two-wheeler ignition controllers. It also fits auxiliary automotive loads that require a high-side/low-side driver pair with on-board regulation. When designing with this IC, the engineer should observe the layout guidelines for the SOIC-32 EP thermal pad: the exposed pad must be soldered to a copper area of at least 1 square inch to stay within the thermal budget when the injector driver carries continuous current. Decoupling capacitors should be placed as close as possible to the VCC and VBAT pins, and the ignition IGBT must be located within 50 mm of the ignition pre-driver output to limit parasitic inductance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
MCZ33887EK - 5A H-Bridge Motor Driver with Load Current Feedback | NXP
The NXP MCZ33887EK is a monolithic 5.0 A H-Bridge Power IC with integrated load current feedback, designed for closed-loop DC motor control in automotive and industrial applications. It is housed in a 54-pin HSOP (Heatsink Small Outline Package) with an exposed thermal pad, supporting surface-mount assembly and direct PCB heatsinking. The device operates from a 5 V to 28 V supply range and drives brushed DC motors, relays, solenoids, and resistive/inductive loads up to 5 A continuous, with on-state resistance of 120 mOhm per MOSFET. What is an H-Bridge motor driver? An H-Bridge is a circuit configuration of four switching elements arranged in an 'H' topology that allows bidirectional current flow through a DC motor or other load. By selectively enabling diagonal pairs of switches, the direction of rotation can be reversed without mechanical relays. Integrated H-Bridge ICs combine the four power MOSFETs, gate drivers, charge pump, and protection logic in a single package, replacing discrete implementations that would otherwise require dozens of components. Key features of the MCZ33887EK include a current feedback (load current sense) output that mirrors the motor current to an external ADC or comparator for precise closed-loop torque or speed control, integrated PWM capability with shoot-through protection, low-side current recirculation mode for free-wheeling braking, and comprehensive fault diagnostics including overcurrent, overtemperature, and undervoltage lockout (UVLO). The exposed thermal pad of the 54-HSOP package provides a low 1.0 C/W junction-to-case thermal resistance, supporting continuous 5 A operation without an external heatsink. The architecture uses four paralleled power MOSFETs (two high-side, two low-side) controlled by an internal charge-pump gate drive that tolerates supply transients up to 28 V. The MCZ33887EK is qualified to the AEC-Q100 automotive standard, making it suitable for under-hood applications such as throttle control, HVAC flaps, mirror adjusters, and headlamp levelers. Internal logic supports both Sign-Magnitude and Locked Anti-Phase PWM control schemes. Typical applications include automotive throttle-by-wire, electronic parking brake, HVAC damper actuators, industrial DC servo drives, brushed DC gear motors, and bi-directional solenoid drivers. The wide supply range (5-28 V) accommodates both 12 V automotive and 24 V truck/industrial buses. When designing with this device, place the load current sense resistor close to the FB pin and add an RC filter to attenuate switching transients. The exposed thermal pad must be soldered to a copper pour of at least 1 square inch for reliable continuous 5 A operation. Below approximately 7 V supply, the internal charge pump loses regulation margin, so check worst-case cold-crank conditions. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including a verified pinout diagram, application-specific design guidance, and a head-to-head comparison against alternative NXP H-Bridge drivers and cross-brand equivalents.
MCZ33887EKR2 - 5A H-Bridge Driver w/ Load Current Feedback | NXP
The NXP MCZ33887EKR2 is a 5.0 A monolithic H-Bridge Power IC with integrated load current feedback, housed in a 54-SSOP (0.295 inch / 7.50 mm width) exposed-pad package for surface mount applications. It operates from a 5 V to 28 V supply range and features a low on-state resistance of 120 mOhm (typical per MOSFET leg), making it ideal for driving DC motors, solenoids, and resistive/inductive loads up to 5 A continuous. An H-Bridge (also called a four-quadrant DC motor driver or full-bridge driver) is a power topology built from four switching elements that allows current to be driven through a load in either direction. It belongs to the broader motor-driver IC family, which itself sits within the power management IC category - devices that convert, regulate, and deliver power to downstream loads. Closed-loop current feedback is the key feature that elevates the MCZ33887EKR2 above simple half-bridge drivers, enabling precise torque control in DC motor applications such as throttle-by-wire. Key differentiating features include built-in charge pump (only external capacitor needed), internal control logic for direction/coast/brake modes driven by two logic inputs, internal PWM current limiting via a programmable reference, and load-current feedback through a dedicated analog output pin proportional to motor current. The exposed thermal pad on the 54-SSOP package keeps junction temperature rise manageable even when dissipating the full I*I*R loss of high-current loads. Architecturally, the part combines four DMOS power transistors, gate drivers, charge pump, current-sense shunt amplifier, and protection circuitry on a single power IC die. The integrated current sense amplifier outputs a voltage proportional to load current, eliminating the need for an external sense resistor and supporting closed-loop torque control without additional analog components. Typical applications include DC motor control in throttle-by-wire systems, HVAC flap actuators, mirror adjusters, seat positioners, idle speed control, and similar 12 V body electronics applications. Industrial uses extend to small brushed DC gear motors and bidirectional solenoid valves. Automotive was the primary design target, given the 5-28 V supply and load-dump tolerant characteristics. When using this part, ensure adequate copper area on the PCB for thermal management - the exposed pad must be soldered to a sufficient copper pour to handle the I^2R dissipation at high currents. The PWM frequency should be selected above the audible range (>20 kHz) for noise-sensitive applications, and the current-limit reference resistor should be sized based on the desired peak motor current. This page synthesizes distributor pricing, NXP/Freescale generation family cross-references, and practical PCB layout notes not found in the standalone manufacturer datasheet, giving engineers a one-stop reference for H-Bridge selection.
MCZ33903BD3EK - SBC CAN HS 3.3V 32-SOIC EP | NXP
The NXP MCZ33903BD3EK is a second-generation System Basis Chip (SBC Gen2) integrating a high-speed CAN transceiver, a LIN transceiver, and a 3.3 V logic supply in a 32-pin SSOP-EP (exposed pad) package, designed for automotive body and chassis ECUs. It operates from a 5.5 V to 28 V supply rail, supports CAN Normal/Sleep modes, and provides a regulated 3.3 V output for microcontroller power, simplifying BOM and PCB area for nodes that previously needed discrete transceivers plus a separate LDO. A System Basis Chip is a multi-function analog/digital mixed-signal IC that consolidates the power, communication, and housekeeping blocks of a distributed automotive ECU onto one die. In the broader taxonomy, the SBC sits between discrete CAN/LIN transceivers (one function per chip) and full automotive microcontrollers (which now increasingly integrate the SBC inside the MCU package). The 33903 family is NXP's second-generation SBC, succeeding the 33390 series, and adds enhanced low-power Sleep mode current, watchdog, and SPI-configurable features. Key features include a high-speed CAN physical layer compliant with ISO 11898, a LIN 2.x physical layer, a 3.3 V / ~100 mA auxiliary regulator for the host MCU, an SPI interface for control and diagnostics, and low Sleep-mode quiescent current optimized for always-on automotive networks. The exposed thermal pad on the 32-SSOP-EP package reduces junction-to-ambient thermal resistance and improves dissipation when the SBC delivers continuous current to its MCU load. The device uses NXP's SMARTMOS technology, mixing high-voltage analog power stages with CMOS digital logic. CAN HS supports up to 1 Mbit/s bus speed, dominant output driver with slope control, and bus-fault diagnostics; the LIN block supports 20 kbit/s master/slave with integrated pull-up. Both bus pins survive automotive transient events typical of 12 V body and 24 V truck systems. Typical applications include automotive body controllers, HVAC control modules, seat and mirror controllers, lighting ECUs, door modules, and CAN/LIN gateway nodes where one chip replaces a discrete CAN + LIN + 3.3 V LDO stack. The wide 5.5 V to 28 V input range covers both 12 V passenger and 24 V commercial vehicle battery systems. When designing with this SBC, ensure the exposed pad is soldered to a sufficiently large copper pour (>=1 sq. in.) to keep junction temperature within SOA during 3.3 V regulator full load. Add bulk capacitance at VCC and a 100 nF decoupling capacitor close to each supply pin to meet automotive EMC and ESD requirements per ISO 7637. This page compiles datasheet-grade specifications, distributor stock, drop-in pin-compatible alternatives (same 32-SSOP-EP footprint), and design-embedded guidance not duplicated on NXP's product brief, saving engineering time during component selection.
MCZ33903BS3EK - SBC CAN HS 3.3V | NXP | 32-SSOP-EP
The NXP MCZ33903BS3EK is a second-generation System Basis Chip (SBC Gen2) integrating a high-speed CAN transceiver, a LIN transceiver, a 3.3V low-dropout voltage regulator, and protected outputs into a single 32-pin SSOP with an exposed thermal pad (SSOP-32 EP). The device operates from a 5.5V to 28V supply range, making it well-suited to 12V and 24V automotive battery rails while powering an external microcontroller through its internal 3.3V LDO. A System Basis Chip is a category of mixed-signal automotive IC that combines physical-layer transceivers with power management and supervision functions on one die. The SBC sits between the vehicle bus and the microcontroller, providing both the bus interface (CAN/LIN) and the regulated rails the MCU needs to run. This integration reduces PCB area, simplifies EMC compliance, and centralizes fault handling for the ECU. Key features include HS-CAN ISO 11898-2/-5 conformance, a LIN 2.x physical layer compliant with SAE J2602, a 3.3V LDO capable of sourcing the host MCU, two wake-up capable inputs, and a low-power standby mode with typical quiescent current in the microamp range. The exposed pad on the 32-SSOP package provides a low thermal resistance path for the internal linear regulator, which can dissipate significant power when VIN is high and the load is heavy. Architecturally, the MCZ33903BS3EK uses independent charge pumps for the CAN driver to support low-power modes, separate ESD-protected bus pins compliant with IEC 61000-4-2 style automotive transients, and internal window watchdog logic that can be routed to the host MCU. The device also offers fault protection on the battery pin (load-dump tolerant to 40V) and on the bus pins, which is essential for OEM automotive qualification. Typical applications include body car ECU chassis and HVAC control modules, body controllers in vehicle body control modules, instrument clusters with CAN/LIN connectivity, and gateway ECUs that bridge CAN and LIN subnets. The wide 5.5V-28V operating range also supports industrial CAN nodes that need a regulated 3.3V rail. When designing with this device, place the exposed pad on a sufficiently large copper pour because the internal LDO can dissipate several watts under high VIN-VOUT differential. Decoupling on VBAT, VCC, and the 3.3V output must follow NXP reference layout guidance for EMC compliance. This page synthesizes current distributor pricing, drop-in alternative listings, and practical design notes not consolidated in the manufacturer datasheet.
MCZ33903C3EK - SBC with 2 LDOs & High-Speed CAN | NXP
The NXP MCZ33903C3EK is an automotive-grade System Basis Chip (SBC) Gen2 that integrates two 3.3V / 400 mA low-dropout regulators, one high-speed CAN transceiver, and a wake-up input, housed in a 32-pin SOIC-EP wide-body exposed-pad package. It is built for body and powertrain networks that need a single IC to deliver CAN connectivity plus regulated rails for an external microcontroller. An SBC is a mixed-signal power-and-communication IC that combines a CAN (or LIN) transceiver, voltage regulators, and housekeeping logic in one package. By consolidating these functions, an SBC shrinks the BOM, reduces quiescent current in sleep mode, and gives the MCU a clean 3.3V rail plus a robust physical layer for in-vehicle networking. The MCZ33903C3EK is one of NXP's second-generation SBCs designed for 12V automotive battery systems. Key features include two independent 3.3V/400 mA LDO outputs, an integrated high-speed CAN physical layer compliant with ISO 11898, one wake-up input capable of waking the network from sleep, and a 5.5V to 28V supply operating window that handles load-dump and cranking transients on a 12V automotive bus. The exposed thermal pad lowers theta_JA so the part can sustain the regulator currents without external heatsinking in normal automotive environments. On the silicon side, the device uses NXP's SMARTMOS process with on-chip thermal shutdown, short-circuit protection on both LDOs, and bus-pin ESD protection that exceeds automotive IEC 61000-4-2 expectations. The high-speed CAN driver meets the loop-delay and recessive-bit symmetry requirements of ISO 11898-5, allowing reliable communication at 1 Mbit/s on twisted-pair automotive harnesses. Typical applications include automotive body controllers, HVAC modules, seat controllers, instrument clusters, and gateway nodes where a small MCU plus a CAN bus is the entire node function. The block is also commonly used in industrial CAN nodes that need a wide supply input range and automotive-grade robustness. When designing with this part, allocate a 4-layer PCB with a ground pour under the exposed pad; bypassing both LDOs with 1 µF X7R ceramic capacitors placed within 2 mm of the pins keeps regulator noise below 50 µVrms. The CAN bus termination, ESD clamp, and split-pin network should follow the typical application circuit in the device datasheet. This page synthesizes distributor pricing, drop-in NXP same-family variants, and practical design notes not consolidated on any one distributor page, complementing NXP's product brief with engineer-ready selection guidance.
MCZ33903C5EK - SBC Gen2 with High-Speed CAN & LIN | NXP
The NXP (formerly Freescale) MCZ33903C5EK is a second-generation System Basis Chip (SBC) that integrates a high-speed CAN transceiver (ISO 11898-2 and -5), a LIN interface, and an advanced power-management unit for 5V microcontrollers, sensors, and CAN transceivers, all in a 32-pin SOIC-EP package. The C5 variant specifies 20 kbps minimum CAN data rate with Normal/Sleep mode behavior, and supports automotive battery rails at 9V, 12V, 15V, 18V, and 24V nominal supplies. The integrated 5V regulator supplies external loads and the SBC itself. A System Basis Chip is a category of mixed-signal automotive IC that combines a voltage regulator with one or more communication transceivers (CAN, LIN, FlexRay) on a single die, reducing module PCB area and bill-of-materials versus discrete implementations. SBCs sit hierarchically under automotive microcontroller power trees and above discrete CAN/LIN transceivers, providing watchdog, reset, fail-safe state machine, and bus diagnostics that no discrete transceiver offers. Key features include built-in enhanced high-speed CAN compliant with ISO 11898-2 and -5, local and bus failure diagnostics, integrated protection and fail-safe handling, normal and sleep modes, watchdog and reset generation, and a 5V LDO output. The 32-pin SOIC-EP provides an exposed thermal pad for heat dissipation in body, chassis, and powertrain modules that run directly from the 12V automotive bus. Architecturally, the device couples a synchronous buck pre-regulator feeding an internal 5V LDO with charge-pump biasing for the high-speed CAN drivers; LIN is implemented as a windowing, slew-rate-controlled physical layer per ISO 17987. Diagnostic state machines flag dominant timeouts, thermal shutdown, and CAN bus dominant clamping for the host MCU. Typical applications include automotive body control modules, HVAC controllers, seat control units, instrument clusters, gateway modules, and other 12V-powered ECUs that require networked communications and regulated MCU power. The wide 9V-27V operating range supports both traditional 12V and emerging 24V heavy-duty truck electrical systems with adequate transient headroom. When designing with this part, observe load-dump and jump-start transient immunity per ISO 7637, place bulk and bypass capacitance close to the regulator and CAN pins, and verify dominant-timeout timing in the chosen sleep/wake strategy. The exposed pad must be soldered to a sufficient copper pour to keep junction temperature within the -40C to +125C operating range at full load. This page synthesizes distributor pricing, drop-in alternatives, and practical automotive design notes not found in the bare manufacturer datasheet, with citations to NXP's official MC33903 product page.
MCZ33903C5EKR2 - SBC with CAN/LIN, 5V MCU Regulator | NXP
The NXP MCZ33903C5EKR2 is a second-generation System Basis Chip (SBC Gen2) integrating a high-speed CAN transceiver, a LIN interface, and a 5.0 V / 3.3 V selectable MCU voltage regulator in a 32-pin SOIC Wide EP package. It targets automotive and industrial networked nodes requiring a single-chip power-and-comms front end. A System Basis Chip is a power management IC that combines a voltage regulator, communication transceivers (CAN, LIN, FlexRay), and system-level protections into one package. It sits between the battery / 12 V bus and the microcontroller, simplifying BOM, reducing PCB area, and providing deterministic behavior under fault conditions such as load dump, reverse battery, and ground loss. The MCZ33903C5EKR2 includes a fully-protected embedded 5.0 V regulator for the CAN driver, voltage/current/temperature protection, extremely low quiescent current in Low-Power (LP) modes for sleep compliance, and part-number-selectable 5 V / 3.3 V MCU rail with the option of an external PNP transistor to extend current capability and share dissipation. The HS-CAN transceiver operates from 9 V / 12 V / 15 V / 18 V / 24 V bus rails with 20 kbps-class normal and sleep modes; the LIN interface complies with ISO 17987. Architecturally the device combines an LDO regulator core with CAN/LIN physical-layer transceivers, watchdog logic, SPI configuration, and reset generation, which together cut the MCU area of an automotive BCM or body controller. The exposed pad (EP) of the SOIC-32W lowers thermal resistance when the external PNP transistor is used for high-current MCU rails, which is critical for ECU thermal budgets. Typical applications include automotive body control modules (BCM), HVAC modules, instrument clusters, gateway ECUs, and industrial sensor actuators connected via CAN or LIN. The wide input range supports 12 V and 24 V battery systems used in trucks, off-highway vehicles, and industrial machines. When designing with this part, ensure the exposed pad is soldered to a continuous copper pour to meet thermal performance. The 5 V / 3.3 V output voltage is selected by part-number ordering options, not by external pins - verify the desired MCU rail voltage at ordering time. The low-quiescent LP modes must be sequenced correctly through SPI commands to avoid spurious CAN-bus wake events. This page synthesizes distributor pricing, drop-in alternatives, and engineering design notes not collected in the manufacturer datasheet, with parameters anchored to the FindIC and DigiKey listings as of 2026-10-15.
MCZ33903CD3EK - System Basis Chip with CAN/LIN | NXP
The NXP MCZ33903CD3EK is a second-generation System Basis Chip (SBC) for automotive body and network modules, integrating an enhanced high-speed CAN transceiver (ISO 11898-2/-5), two LIN 2.0 transceivers, an auxiliary 5.0 V / 3.3 V selectable MCU supply, and a low-power modes controller in a single 32-pin SOIC W EP (exposed pad) package. The device is AEC-Q100 qualified and is specified for 9 V to 18 V bus operation with full 27 V load-dump tolerance, with extended range up to 27 V supply and down to 6.5 V cold-crank, making it a true automotive-grade power and bus companion for 5 V or 3.3 V microcontrollers. A System Basis Chip (SBC) is an automotive-specific category of power-management-plus-interface ICs that consolidates a voltage regulator, one or more communication transceivers, and supervision/monitoring into a single package. SBCs sit one layer above plain voltage regulators in the power-management IC hierarchy (LDO -> voltage regulator -> SBC -> power management IC) and replace a discrete implementation that would otherwise need a separate CAN/LIN transceiver IC, a 5 V/3.3 V regulator and a watchdog supervisor. Compared to discrete designs, an SBC reduces PCB area, simplifies ECU layout, and provides integrated fault diagnostics. Key features of the MCZ33903CD3EK include built-in ISO 11898-2 and ISO 11898-5 high-speed CAN with local and bus failure diagnostics and bus dominant time-out protection, two LIN 2.0 / J2602 compliant transceivers, MCU voltage selection (5 V or 3.3 V via state-machine programming) with optional external PNP pass transistor for current sharing, voltage/current/temperature protection, and very low quiescent current in low-power modes to support battery-saving shutdown states. The 32-pin SOIC Wide Body with exposed pad provides a thermal path capable of dissipating the device and, when used, the external PNP’s power. Typical applications include automotive body controllers, HVAC modules, seat and door-zone ECUs, instrument clusters, gateway nodes, and any 12 V module that must combine bus connectivity with MCU power management. The device integrates diagnostics for bus faults and over-temperature/over-voltage, lowering host software burden and supporting ISO 26262 functional-safety system design. When designing with this device, follow NXP’s reference layouts for the SOIC W EP thermal pad, use a low-impedance ground return from the exposed pad to the ECU ground plane, and select the 5 V / 3.3 V MCU rail via the SPI-configurable voltage select register before MCU firmware transitions to full-run. Watch the LIN bus dominant time-out timer for compliant bus arbitration in your network.
MCZ33903CD5EK - SBC with HS-CAN & LIN, 5V LDO | NXP
The NXP MCZ33903CD5EK is a second-generation System Basis Chip (SBC) integrating an enhanced high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5, a LIN 2.0 interface, a 5V/200mA LDO voltage regulator, and four low-side drivers in a 32-pin SSOP-EP exposed-pad package. A System Basis Chip (SBC) is a category of automotive-qualified mixed-signal IC that consolidates a 5V (or 3.3V) microcontroller power supply with one or more in-vehicle bus transceivers (CAN, LIN, FlexRay) and sometimes watchdog or low-side switches. SBCs sit hierarchically between discrete CAN transceivers (e.g., MC33388) and full automotive microcontroller power-management units, simplifying BCM (Body Control Module), gateway, and HVAC blower designs by replacing 3-5 ICs with one chip. The MC33903 family is the second-generation evolution of the MC33389 SBC family. Key features include HS-CAN supporting 1 Mb/s with local and bus failure diagnostics, a LIN 2.0 physical interface, a 5V low-dropout regulator delivering up to 200 mA for the host MCU, four configurable low-side drivers rated to 1.5A, integrated SPI-configurable safety watchdog, and reset generation with power-on/power-off warning. Operating voltage range covers 5.5V to 27V (load-dump tolerant to 40V), with low sleep-mode current under 100 uA. The 32-SSOP-EP exposed pad enables PCB heat dissipation at 1.5A driver loading. The device uses a Freescale-developed automotive process with extensive ESD protection (8 kV HBM on CAN bus pins) and ISO 11898-5 low-power mode support. Internal diagnostics report bus dominant time-out, overtemperature, and under-voltage events via SPI to the MCU. Common applications are automotive body control modules, HVAC blower controls, instrument clusters, and CAN/LIN gateway nodes. Designers choose the MC33903 to consolidate multiple bus interfaces behind a single SPI port while maintaining AEC-Q100-grade reliability. Watchdog validation. When routing the PCB, place the exposed pad over a continuous copper pour connected to PGND, and keep the CANH/CANL traces as a 100-ohm differential pair matched within 5 mm. This page synthesizes distributor inventory, AEC-Q100 alternatives, and PCB layout guidance not found in the manufacturer datasheet alone.
MCZ33903CP3EKR2 - SBC Gen2 CAN/LIN 32-SOIC-EP | NXP
The NXP (formerly Freescale) MCZ33903CP3EKR2 is a second-generation System Basis Chip (SBC) integrating a high-speed CAN transceiver, a LIN transceiver, a 5.0 V / 3.3 V LDO voltage regulator for MCU supply, and protection circuitry in a single 32-pin SOIC package with an exposed thermal pad. The device targets automotive and industrial network node applications where PCB area, component count, and reliability targets must all be minimized simultaneously. A System Basis Chip (SBC) is an integrated circuit that combines multiple power, communication, and protection functions traditionally implemented as discrete blocks. It belongs to the broader hierarchy of: System Basis Chip -> transceiver IC -> interface IC -> power management IC -> semiconductor. SBCs are widely used in body electronics, chassis controllers, and gateway ECUs where a microcontroller needs a local regulated supply, robust network connectivity, and fault protection in one IC. Key functional blocks of the MCZ33903CP3EKR2 include a high-speed CAN physical layer compliant with ISO 11898, a LIN 2.x physical layer, an MCU-supply LDO selectable between 5.0 V and 3.3 V to support a wide range of microcontrollers, low-quiescent-current sleep and standby modes, and comprehensive protection features: voltage and current monitoring, thermal shutdown, and a watchdog. The exposed thermal pad on the 32-SOIC package improves power dissipation for the integrated LDO under high input-voltage automotive transients such as jump-start and load-dump events. Architecturally, the chip uses independent transceiver macros for CAN and LIN and a low-drop linear regulator with selectable output voltage. Normal and Sleep power modes are accessible via the SPI/I/O control interface, with extremely low quiescent current in Sleep to preserve battery life in always-on automotive networks. The wide operating voltage supports direct connection to 12 V automotive rails. Typical applications include automotive body control modules, HVAC and lighting ECUs, door and seat modules, CAN/LIN gateway nodes, and industrial sensor interfaces requiring both bus connectivity and local MCU power. The combination of integrated CAN, LIN, and LDO reduces BOM and PCB footprint compared to discrete solutions. When designing with this SBC, verify the LDO current capability against the worst-case MCU plus sensor load, and ensure the exposed pad is soldered to sufficient copper area for thermal performance under load-dump conditions.
MCZ33903CP5EK - SBC Gen2 with Hi-Speed CAN, 32-SOIC EP | NXP
The NXP MCZ33903CP5EK is a second-generation System Basis Chip (SBC Gen2) integrating a 5V/3.3V-selectable voltage regulator for the host MCU, a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5, an SPI-controlled companion interface, and comprehensive system protection, all housed in a 32-pin SOIC wide-body package with an exposed thermal pad. A System Basis Chip (SBC) is a category of multi-functional automotive IC that combines power management with one or more communication transceivers (CAN, LIN, FlexRay) into a single package. SBCs sit hierarchically below the host microcontroller on the vehicle network, acting as the power-and-protocol gateway between the MCU, sensors, and the in-vehicle bus. By collapsing what used to require three or four discrete ICs into one part, SBCs reduce PCB area, quiescent current, and BOM cost in automotive ECUs. Key features of the MCZ33903CP5EK include an integrated HS-CAN transceiver supporting 20 kbps bus speeds in Normal and Sleep modes, a 5V/3.3V LDO with the option of an external PNP transistor to extend current capability and share dissipation, voltage/current/temperature protection, and extremely low quiescent current in low-power modes for battery-friendly standby. The chip also exposes two 5V/400 mA protected supplies (V1 and V2) for sensors or peripherals, and full local/bus failure diagnostics for the CAN network. Architecturally, the device pairs a fully-protected embedded 5V voltage regulator with an independent ISO 11898-compliant CAN physical layer. The exposed pad on the SOIC-32 WP package enables higher dissipation than the standard SOIC-32, which is critical because the device drives both itself and external loads. Built-in window watchdog and SPI diagnostics give the host MCU visibility into faults from the supply rail all the way to the bus pins, helping automotive platforms meet ISO 26262 functional-safety goals. Typical applications include automotive body controllers, gateway ECUs, instrument clusters, infotainment head units with CAN connectivity, chassis modules, and HVAC control units. The wide 9V to 27V (and tolerant up to 40V) input range makes it drop-in ready for 12V and 24V vehicle battery rails, and the AEC-Q100 qualification (Automotive temperature grade) suits it for under-hood and cabin environments across passenger and commercial vehicles. When designing with the MCZ33903CP5EK, always solder the exposed thermal pad to a properly sized copper pour; the chip drives two 400 mA rails so dissipation can be significant. Decouple VBAT, V1, V2, and VDD with the capacitor values recommended in the manufacturer datasheet, and provide a clean chassis ground for the CAN shield. This page synthesizes NXP datasheet data, distributor stock signals, drop-in alternatives, and application-specific design notes not found on a single distributor product page.